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if(DEFINED ENV{DESTDIR})
file(TO_CMAKE_PATH
$ENV{DESTDIR}/@CMAKE_INSTALL_FULL_DATADIR@/nvim/runtime/doc
HELPTAGS_WORKING_DIRECTORY)
else()
file(TO_CMAKE_PATH
@CMAKE_INSTALL_FULL_DATADIR@/nvim/runtime/doc
HELPTAGS_WORKING_DIRECTORY)
endif()
message(STATUS "Generating helptags in ${HELPTAGS_WORKING_DIRECTORY}.")
if(EXISTS ${HELPTAGS_WORKING_DIRECTORY}/)
message(STATUS "${HELPTAGS_WORKING_DIRECTORY} already exists")
# If the doc directory already exists, helptags could fail due to duplicate
# tags. Tell the user to remove the directory and try again.
set(TROUBLESHOOTING "\nRemove \"${HELPTAGS_WORKING_DIRECTORY}\" and try again.")
endif()
# Workaround for hanging "yes | nvim -c 'helptags ++t .'"
# and therefore hanging "yes | make install":
# Set INPUT_FILE to an empty file, causing execute_process
# to disregard other standard input (such as "yes |").
set(EMPTY_FILE ${CMAKE_CURRENT_BINARY_DIR}/.GenerateHelptags)
file(WRITE ${EMPTY_FILE} "")
execute_process(
COMMAND ${CMAKE_CURRENT_BINARY_DIR}/bin/nvim
-u NONE
-es
-c "helptags ++t ."
-c quit
WORKING_DIRECTORY ${HELPTAGS_WORKING_DIRECTORY}
INPUT_FILE ${EMPTY_FILE}
OUTPUT_VARIABLE err
ERROR_VARIABLE err
RESULT_VARIABLE res)
if(NOT res EQUAL 0)
message(FATAL_ERROR "Generating helptags failed: ${err} - ${res}${TROUBLESHOOTING}")
endif()
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